The Comfort Audio Neckloop Connector Cable is used with the Comfort Duett model with large volume buttons (sold separately). Options available: Short ($16.95) (pictured above) Allows you to wear the Comfort Duett personal listening device around your neck with a neck lanyard 2.5" in length Long ($20.95) Allows you to have the Comfort Duett on a table, such as in meetings where you want to hear what each person says without having to pass around the Duett personal listener 28" in length